The correct answer is A. Additions.
The Allow Additions property controls whether new records can be added through the form. If this property is set to False, users will not be able to add new records through the form.
The Allow Edits property controls whether existing records can be edited through the form. If this property is set to False, users will not be able to edit existing records through the form.
The Allow Deletions property controls whether existing records can be deleted through the form. If this property is set to False, users will not be able to delete existing records through the form.
The Data Entry property controls whether users can enter data into the form. If this property is set to False, users will not be able to enter data into the form.
I hope this helps!